Kerry calls her Grape Gimp
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
Kerry sat in the caravan and rang her 'Grape Gimp', James Acaster, who rolled the grape down a chopping board, which attached to a balloon and floated to the caravan window, dropping into a drainpipe that led directly to Kerry's mouth.
(Written by Taskmaster Wiki contributors)